package com.pzhu.common.security;

import cn.hutool.json.JSONUtil;
import com.pzhu.common.constant.Constant;
import com.pzhu.model.help.ResponseResult;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 登录失败处理
 */
@Component
public class LoginFailureHandler implements AuthenticationFailureHandler {

    @Override
    public void onAuthenticationFailure(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e) throws IOException, ServletException {
        httpServletResponse.setContentType("application/json;charset=UTF-8");
        ServletOutputStream outputStream = httpServletResponse.getOutputStream();
        String message=e.getMessage();
        if(e instanceof BadCredentialsException){
            message = Constant.LOGIN_FAIL_MSG;
        }
        outputStream.write(JSONUtil.toJsonStr(ResponseResult.error(message)).getBytes("UTF-8"));

        outputStream.flush();
        outputStream.close();

    }
}
